<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<link rel="stylesheet" type="text/css" href="css/例5.11.css"/>
	<body>
		<h1>在次登录</h1>
		
		<form>
			
			<input type="text" class="txt" />
			
			<input type="password" class="txt" />
			
			<br />
			<input type="text" class="btn" />
			
			<input type="password" class="btn" />
			
		</form>
		
		<p>以下是一些测试用的链接</p>
		<p>
			<a href="1.html">样式规则声明</a>
			<a href="2.html">HTML 选择器</a>
			<a href="3.html">类选择器</a>
			<a href="4.html">ID 选择器</a>
		</p>
	</body>
</html>